JAC Class 12 Biology Question Paper 2018 with Solution
JAC Class 12
Biology2018Download pdf solved JAC Class 12 biology question paper 2018. Learn how to get higher marks with this in-depth solution of biology for your JAC Board 12th exam.
Downloaded from jac.jharkhand.gov.in
About this paper
This is the Jharkhand Academic Council (JAC) Class 12 Biology paper from the 2018 board examination, with answers given under the questions. It has a Botany section and a Zoology section, each made up of ten multiple-choice questions, three very short answers, three short answers and two long answers, and every long answer offers an 'Or' alternative. Botany long answers ask for the structure of an angiosperm microsporangium, incomplete dominance versus co-dominance, and biodiversity loss or recombinant DNA; the Zoology ones cover spermatogenesis, eutrophication and human sex determination. Marks and time are not printed. Several multiple-choice answers printed here are wrong, so check them against your textbook.
- Exam
- JAC Class 12
- Subject
- Biology
- Year
- 2018
- Pages
- 4
- Answers included
- Yes
Paper pattern
Group A
Questions 1–10 in each section: multiple choice
Group B
Questions 11–13 in each section: very short answers
Group C
Questions 14–16 in each section: short answers, including match-the-columns and diagram labelling
Group D
Questions 17–18 in each section: long answers, each with an 'Or' alternative
Topics covered
- Reproduction in flowering plants
- Mendelian inheritance and test cross
- Incomplete dominance and co-dominance
- Sex determination and sex-linked diseases
- Molecular basis of inheritance
- Biotechnology: PCR, restriction enzymes and gene cloning
- Transgenic animals and Bt toxin
- Microbes in human welfare
- Homologous and analogous organs
- Human reproduction and spermatogenesis
- Biodiversity and conservation
- Greenhouse effect and eutrophication
Questions from this paper
- What is triple fusion? Name the nuclei involved in triple fusion.
- Describe the following in brief: PCR, restriction enzyme and gene cloning.
- Describe the structure of a typical angiosperm microsporangium with a diagram, and explain the function of each part.
- Define biodiversity. What are the major causes of loss of biodiversity? Give two conservation strategies to protect it.
- What is eutrophication? What are its effects on aquatic organisms?
- How does sex determination take place in humans?
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